Apex domains cannot have CNAME records.
Question and response
Question
dig yukiworks.nl. NS
Answer
yukiworks.nl. 5 NS ns-1276.awsdns-31.org.
yukiworks.nl. 5 NS ns-1913.awsdns-47.co.uk.
yukiworks.nl. 5 NS ns-126.awsdns-15.com.
yukiworks.nl. 5 NS ns-961.awsdns-56.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0